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  • Other Sources  (28)
  • Cambridge University Press  (22)
  • Blackwell Publishing Ltd
  • International Union of Crystallography
  • Oxford University Press
  • 2005-2009  (16)
  • 1995-1999  (10)
  • 1980-1984  (2)
  • 1935-1939
  • 2007  (7)
  • 2006  (9)
  • 1995  (10)
  • 1980  (2)
  • 1
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    Resistance against heterogeneous sequential infections: experimental studies with a tapeworm and its copepod host (2006)
    Cambridge University Press
    In:  Journal of Helminthology, 80 (2). pp. 199-206.
    Details
    Publication Date: 2020-07-23
    Type: Article , PeerReviewed
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  • 2
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    An Outline Of The Biology of the Squid Illex Coindetii in the Sicilian Channel (Central Mediterranean) (1995)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 75 (02). pp. 373-390.
    Details
    Publication Date: 2020-07-16
    Description: The genus Illex is likely to constitute a large portion of the annual world ommastrephid squid catches (Roper et al, 1984), even though specific official statistics are difficult to obtain. The broad-tail short-fin squid Illex coindetii is a widespread species ranging from the western to the eastern Atlantic (Roper et al., 1984) and east through the whole Mediterranean Sea (Mangold & Boletzky, 1987). Usually a by-catch of important fisheries, it is caught mainly by trawlers. Although its economic value is lower than that of other squid species (i.e. Loligo spp.), in the Sicilian Channel Illex coindetii may represent a valuable resource due to its abundance. In Italian waters, the available statistics (Cingolani et al., 1986) report that 2680 tonnes of ommastrephid squid were landed in 1982 (0.5% of the total landed catch). The main component of these was landed in Sicily (2183 tonnes), a consistently large part of which was no doubt Illex coindetii (Ragonese & Jereb, 1992). The catches came mainly from southern Sicilian waters (Sicilian Channel) where one of the major Mediterranean landing places is in Mazara del Vallo. Large trawlers (up to 200 gross tonnage) usually carry out long fishing trips (15–20 d), and Illex coindetii is caught mainly by those targeting Parapenaeus longirostris and Merluccius merluccius (Jereb & Ragonese, 1991).
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  • 3
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    First Records of Mated Female Loligo Gahi (Cephalopoda: Loliginidae) in the Falkland Islands (1995)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 75 (03). p. 743.
    Details
    Publication Date: 2020-07-16
    Description: This communication presents the first records of mated female Loligo gahi in Falkland Island waters. In October 1993 fully mature mated female L. gahi were identified in samples taken from the commercial fishery in waters east of Lively Island, East Falkland, at depths of 145–174 m. Spermatophores were found in both the mantle cavity and buccal sites of deposition. These records, combined with past records of spent females, suggest spawning periods in late October/early November and April/May. These concur with two of the three periods of spawning suggested from previous studies of juvenile and adult L. gahi.
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  • 4
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    Age, growth and maturation of the European squid Loligo vulgaris (Myopsida, Loliginidae) on the west Saharan shelf (1995)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 75 (03). p. 593.
    Details
    Publication Date: 2020-07-16
    Description: Age, growth and maturation of Loligo vulgaris were studied by examination of growth increments within statoliths of 294 specimens (mantle length, ML, ranging from 31 to 498 mm) caught on the west Saharan shelf between 1985 and 1988. Maximum age was 335 d (290 mm ML) for females, and 396 d (498 mm ML) for males. Growth rates varied considerably among individuals with a greater range in males. Sexual dimorphism in length was apparent after about 210 d. Males and females diverged considerably in weight, with males reaching a greater weight after about 180 d. Growth in length between 124 and 396 d was best described by a power function, while growth in weight was best described by the Gompertz function. Males started maturing at 180–210 d and mature males ranged in age between 250 and 396 d; while females started maturing at 240–270 d and mature females ranged between 285 and 335 d. Loligo vulgaris hatched throughout the year with two distinct peaks; in winter (December - early March) and summer (June-July). The life cycle of L. vulgaris populations on the west Saharan shelf lasts ~1 y, with large males (〉450 mm ML) living slightly longer.
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  • 5
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    Reproductive strategies of male and female Loligo forbesi (Cephalopoda: Loliginidae) (1995)
    Cambridge University Press
    In:  Journal of the Marine Biological Association of the United Kingdom, 75 (03). pp. 621-634.
    Details
    Publication Date: 2020-07-16
    Description: The reproductive strategies of male and female Loligo forbesi Steenstrup, 1856 were investigated from samples obtained from commercial catches and research cruises in Irish waters. In females maturity increased with size, but in males two modes in the size at maturity were identified, with approximately 40% mature at small size (180–200 mm mantle length), and the remainder mature at 〉250 mm mantle length. The difference in estimated age of the two modes of mature males was small, so size differences were probably due to different growth rates. Growth and maturation proceeded together in both sexes over much of the life-cycle. The effect of maturation on relative growth of somatic tissues was examined using analysis of covariance and multivariate regressions. In males there was a significant decline in total mass, and in mass of mantle, head and viscera, relative to mantle length with maturation. In females total mass was not significantly affected by maturation, but relative masses of head, mantle and viscera declined with maturation, indicating that energy was diverted from somatic growth to gonad production. Potential fecundity estimates were obtained by counting eggs and ova in the oviduct and ovary of mature females and were in the range 2500 to 10,500 (mean 5800). Fecundity was positively related to mantle length. The ovaries of mature females contained a range of egg sizes and developmental stages, indicating that spawning probably occurs intermittently.
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  • 6
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    The effect of quorum-sensing blockers on the formation of marine microbial communities and larval attachment (2007)
    Oxford University Press
    In:  FEMS Microbiology Ecology, 60 (2). pp. 177-188.
    Details
    Publication Date: 2019-09-24
    Description: We studied the effect of the quorum-sensing (QS) blockers 5-hydroxy-3[(1R)-1-hydroxypropyl]-4-methylfuran-2(5H)-one (FUR1), (5R)-3,4-dihydroxy-5-[(1S)-1,2-dihydroxyethyl]furan-2(5H)-one (FUR2) and triclosan (TRI) on the formation of bacterial biofilms, and the effect of these biofilms on the larval attachment of the polychaete Hydroides elegans and the bryozoan Bugula neritina. 14-day-old subtidal biofilms were harvested from artificial substrata and were allowed to develop in the laboratory with and without QS blockers. QS blockers inhibited the production of violacein by the QS reporter strain Chromobacterium violaceum CV026 and did not affect the metabolic activity of bacteria in multispecies biofilms. At a concentration of 10(-3) M all three tested compounds inhibited the establishment of microbial communities, but at one of 10(-4) M only FUR2 inhibited establishment. The tested QS blockers caused changes in bacterial density and bacterial community structure, as revealed by terminal restriction fragment length polymorphism and FISH. The groups most affected by QS blockers were Alphaproteobacteria, Gammaproteobacteria and the Cytophagales. Larvae of H. elegans and B. neritina avoided settling on biofilms that had developed in the presence of QS blockers. Our results suggest that QS blockers directly control the formation of multi-species biofilms, and indirectly - by means of biofilm properties - affect larval attachment on these modified biofilms.
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  • 7
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    On the intermediate circulation in the Iceland Basin (2007)
    Cambridge University Press
    In:  In: Lagrangian analysis and prediction of coastal and ocean dynamics. , ed. by Griffa, A., Kirwan, A. D., Mariano, A. J., Özgökmen, T. and Rossby, T. Cambridge University Press, Cambridge, pp. 81-83.
    Details
    Publication Date: 2012-02-23
    Type: Book chapter , PeerReviewed
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  • 8
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    Soil phases: the living phase (2006)
    Cambridge University Press
    In:  In: Soils: Baic Concepts and Future Challenges. , ed. by Certini, G. and Scalenghe, R. Cambridge University Press, Cambridge, United Kingdom, pp. 91-102. ISBN 13 978-0-521-85173-2
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    Publication Date: 2015-01-28
    Type: Book chapter , NonPeerReviewed
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  • 9
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    Photo-Emission Electron Microscopy (PEEM) Heating Investigations of a Natural Amphibole Sample (1995)
    Cambridge University Press
    In:  Mineralogical Magazine, 59 (394). pp. 121-127.
    Details
    Publication Date: 2020-06-30
    Description: PEEM allows ‘real-time’ observations to be made of solid-state transformations and other high-temperature processes taking place during vacuum-heating up to c. 2000°C The solid state transformations of an amphibole-rich hornblendite specimen have been observed in the temperature range of 750–1000°C (± 50°C Between c. 970–990°C a rapid change in orientation contrast was observed, indicating a structural rearrangement from an oxyhornblende crystal lattice to a clinopyroxene structure. This phase retains the original amphibole shape and texture (including two 120°C intersecting cleavage traces), but possesses a clinopyroxene crystal structure. At higher temperatures this phase is seen to decompose, forming iron oxides and other fine-grained products. PEEM has provided useful information on both the nature and rates of transformation of natural amphiboles which has proved invaluable in our understanding of the mineralogically-controlled mechanisms of argon release during 40Ar/39Ar dating of amphibole samples.
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  • 10
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    Gravitational spreading controls rift zones and flank instability on El Hierro, Canary Islands (2006)
    Cambridge University Press
    In:  Geological Magazine, 143 (3). pp. 257-268.
    Details
    Publication Date: 2019-09-23
    Description: Ocean island volcanoes frequently develop local rift zones associated with flank movement and flank collapses. The ocean island El Hierro grew by coalescence and collapse of three volcanic edifices, which are an elongated topographic ridge (the Southern Ridge) and two semi-circular volcanic cones (Ti˜nor volcano, El Golfo volcano). During edifice growth and volcano coalescence, eruption fissures nucleated into rift zones that developed a complex triangle pattern. In scaled analogue experimentswe could successfully reproduce the geometry of rift zones and unstable flanks as observed on El Hierro. The experimental results suggest that the rift configuration on El Hierro is the result of gravitational volcano spreading over deformable basal substrata, rather than of deep-seated magma updoming as thought previously. This paper elucidates the importance of the basal substratum and gravitational spreading, and the relationship to rifting and flank instability on El Hierro Island, and may help in understanding similar volcano architectures elsewhere.
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